[1] The station was built on part of Chai Wan Park and the site of a pre-existing minibus terminus.

The foundation is formed by hand-dug caissons, while the structure comprises reinforced concrete poured in situ.

[4] An overrun track is present to allow trains to stop and reverse direction if they travel beyond Chai Wan station.

However, this set of tracks is rarely used, as trains arriving at Chai Wan station leave for Kennedy Town by pulling out of the same platform.

Before the train closes the door and leaves the station, the red and blue signal lights at the west end of the platform will light up with the word DP (meaning Depot) in white, and the horn will sound again, and it will drive directly back to Chai Wan Depot.